https://www.katacoda.com/courses/docker/

course-docker.md

kickstart docker

katacode

deploying-first-container

Search registry from images

• docker search
• docker search redis

Run Container from images

• docker run
• docker run -d redis

Inspect container

• docker ps
• docker inspect <friendly-name|container-id>
• docker logs <friendly-name|container-id>

Expose Port to host

• docker run -d --name redisHostPort -p 6379:6379 redis:latest
• docker run -d --name redisHostPort -p 127.0.0.1:6379:6379 redis:latest

Expose Rnadom port to host

• docker run -d --name redisDynamic -p 6379 redis:latest

Persist volume on host

• docker run -d --name redisMapped -v /opt/docker/data/redis:/data redis

Exposing shell of container

• docker run ubuntu ps
• docker run -it ubuntu bash

Deploy Static HTML Website as Container

Create Dockerfile

• create a file 'Dockerfile' in an empty directry

FROM nginx:alpine
COPY . /usr/share/nginx/html

Create index.html

• create index.html in same directory

<h1>Hello World</h1>

Build and show images

• docker build -t webserver-image:v1 .
• docker images

Run image and inspect results

• docker run -d -p 8080:80 webserver-image:v1
• curl docker
• http://localhost:8080/

Building Container Images

Creating a Dockerfile

FROM nginx:1.11-alpine
COPY index.html /usr/share/nginx/html/index.html
CMD ["nginx", "-g", "daemon off;"]
EXPOSE 80

Create an index.html file

<h1>Hello World</h1>

Build image

• docker build -t my-nginx-image:latest .
• docker images

Run newly created image

• docker run -d -p 80:80 <image-id|friendly-tag-name>
• curl -i http://docker will
• docker ps
• docker run -d -p 80:80 my-nginx-image:latest

index.html

<h1>Hello World</h1>